Securing device for pinions.



E. A. LARSON.

SECURING DEVICE FOR PlNIONSX APPLiCATION mm APIL24 1914 69 4983 m Patented 3:111. 1916 ilNiTED STATES PATENT OFFICE.

EDWARD A. LARSON. OF CHICAGO, ILLINOIS, ASSIGNOR TO STEWART-WARNER SPEED- OItIETER CORPORATION, OF CHICAGO, ILLINOIS, A CORPORATION OF VIRGINIA.

SECURING ZDE VICE FOR PIN ION S.

Specification of Letters Patent.

Patented Jan. 25, 1916.

Application filed April 24, 1914. Serial No. 834,059.

To all t /iom it may concern:

lie it known that l. lCnwAnn A. LARSON. a citizen oi the l nited tates. residing at Chicago. in the county of (oolc and State of inois. have invented new and useful improvements in Securing Devices for liziions, oi which the tollowing is a specification, reference being had to the accompanyingg drawings, forming a part thereof.

The purpose of this invention is to provide an improved construction of other shatt-t'otattd mem er. which may be made of any suitable substance. and a mount for the same to whieh the pinion may be readily applied removahly.

.1. consists in the elements and features l' ('ottstt'ttctioll shown and described as indicated in the claims.

lit the drawings:-- ligure l is an axial section of a pinion and its mount embodying this invention. tier. 2 is a section at the line 2 3 on Fig. l. Fig. S3 is a perspective view of a retaining deviee which forms part of the pinion. Fig. is a side elevation oi the mount or stub axle upon which the pinion is mounted. l ig'. 5 is a view similar to Fig. l of a modified i'orm.

. n the structure shown in the drawings. 1 is a pinion ltlottnt or slmttterminal upon 'llit'll the pinion in question is to be mounted. it comprises a stop shoulder. I", i'rom whieb protrudes a uon-circular stub axle or shal't terminal. 1". the specific i'orm shown beingovhnrlrieal with tlattened sides. as appearing at l. groove. 1''. is formed pi'el'erably adjacent the shoulder. I. extend int: to the depth ol' the segment eut away lll atteninp' the sides at i". The end of this terminal is conical or tapered. as seen at 1. The pinion body. 2. may be understood to be made oi tiber or other non-inetallic substance. though this is not. essential. it is termed with a central opening. 2". agreeing in shapcand dimensions with the cross set:- tion oi the stub a.\'le at the plane indicated by the line 2 2 on Fig. l. with the addition of diametrically opposite notches. 2". tot accommodatingthe spring lanes of the retaming device hereiua l'ter deseribed.

1 is the retaining device. which is a sheet; metal disk hayingan aperture. ii. eorrespondinp to the aperture in the pinion body. 2, and having a portion ot' the metal struck out; of the aperture totded nearly at right angles to the plane of the disk to form two pawl ti IlllllOn Q1" spring tangs, 3, which are entering the notches, 2", of th 2. when the member, 3, is applied to said pinion body with its apertures coinciding substantially with the aperture of said body. iese tangs have their ends bent: inward to form engaging pawls, as shown at 3, the length of the tangs is such that; these ends stand with their terminal surfaces substantially flush with the plane of positioned for e pinion body,

the inner face of the pinion body, 2, when the retaining device, 3. is applied to the outer face of said body. and the tangs are spread for passing over the largest part or the shaft terminal. which causes them to stand a little inward pinion when they are less spread, as they are normally before the pinion is applied to the shaft. The retaining device, 3. may, if pret'erred. be permanently secured to the pinion body. 2. but when said retaining device is applied. as shown. on the outer side of the pinion. it will retain the latter on the stub axle regardless of the securement or nonserureincnt of said device to the pinion body. a Fig. 5, there is shown a modification in which the groove, 1". is formed immediately,

baek ot' the tapered end. 1". the retaining device being applied upon the inner side of the pinion body. In this form. it is necessarv that the retaining device be permanently se-,

be seen that; in either of the forms illust rated. the pinion with the retaining deviee may be passed over the tapered end of the Lll axle. which will spread the spring tane's as the pinion advances toward the stop shoulder and will snap into the groove when proper position against cured to the pinion body. as by rivets. 4.

the pinion is at the the stop shoulder. '.l he groove may have its side l'aeing' inward sloped sutliciently to permit the pinion to be forced oil the stub axle by applying sullieient pressure. but nevertheless it will be retained securely for all purposes of operation.

I elaimz- 1. ln eombination with a shaft having a noin-ircular terminal. a thereon for rotation thereby disk-like body member having a noncircular eentral aperture adapter toreceive the noneireular terminal of the shaft. and a securing deviee lodged against; one face of the body member. and having tangs extending into the aperture of the latter alongside the shaft; 110

from the plane of said face of the terminal, and having their ends inturned for engagement with the shaft substantially within the thickness of said body member.'

2. In combination with a shaft having a noneircular terminal, a device for mounting on the shaft comprising a disk-like body having a noncircular central aperture adapted to receive the noncircular shaft terminal and be rotatively engaged thereby, and a securing device havlng a noncircular aperture adapted to be similarly engaged by the shaft terminal, said securing device being lodged on the face of the body member' lapping thereon surrounding the aperture, and having tangs extending into said aperture alongside the shaft terminal therein and adapted for engagement with the shaft terminal against longitudinal displacement.

3. A device to be mounted on a shaft for rotation thereby, comprising a body member having a noncircular central aperture and a retainingdevice of annular form encompassing the aperture on the outer side of the body member and having tangs extending from the margin of its central aperture into the aperture of said body, the margins of the aperture of the body being notched to accommodate the tangs, the tangs having their ends inturned approximately at the plane of the opposite face of the body memberfor engagement with the shaft.

4. A device for mounting on a shaft for rotation thereby, comprising a bd'dy member having a noncircular central aperture and a retaining device consisting of an annular disk having spring tangs struck out of its aperture and bent to angular position with respect to the disk, the ends of the tangs'being bent inwardly to form pawl ends for engaging the shaft.

5. In combination with a non-circular shaft, the terminal having a to be rotatedby the shaft having a noncircular aperture for receiving the shaft ter- EDWARD A. LARSON.

W'itnesses LUcY I. STONE, Roar. N. BURTON.

taperedouter; end and a groove back of the end, a member-' substantially right- I 

